Small changes in incentives can lead to large changes in behavior.
数学的美在于它允许我们从物理世界中抽象出来,专注于基本原理。
你越了解自己,对你在别人身上看到的东西就越有耐心。
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。
The secret of good baking is to keep it simple.
There is nothing permanent except change.